Lonnie- It's gratifying to see that some of my hard-sell recommendations have made an impression on you, regardless of whether you make the leap or not.
IMO the chances of somebody overthinking the wash process are pretty slim

Keep analyzing!
The gently-applied BHB can get stuff off as long as 1) that stuff isn't too firmly adhering to the vehicle, and 2) the surface is decently LSPed with a product that readily releases contamination (heh heh, INSERT usual FK1000P spiel here...). IME the BHBs are too gentle to get everything off and the more tenacious "road film" type of contamination needs some degree of, ?dare I use this term?, scrubbing. Hence my multi-step wash process when I wash each section of the vehicle numerous times.
My issues with the BHB-on-a-stick (shades of Gilbert Gottfried's ShoeDini commercial!) are the same as my concerns with the tool MiVor showed- no way to apply a constant flow of foamgun output to provide constant flushing and lubrication. Result is that the wash medium gets dirty and remains so while being moved across the paint (probably in much longer, more sweeping, motions that I recommend too- if you *do* get a scratch, would you prefer one that's 2 inches long, or one that's 12 inches long?). No question that the "conventional way" of using a BHB is an *efficient* way to wash, nice and quick, but also likely to mar.
MiVor- I access those areas via work platforms. I use four units similar to the Bauer 20900 (actually have one of the Bauers and the others are Werner), though I have a fifth one on hand from when I had a larger SUV.
Mr. Gloss- Agree completely about the pressure-on-dirty paint issues with a mitt! Even after getting the big stuff off with a BHB/etc. I always fill my mitts with shampoo mix, hold them shut at the cuff, and gently whisk them across the surface.